"Subject index to presidential correspondence of James McCrea, ca.1907-1912" . . "An companion series of index cards to the Presidential Correspondence of James McCrea, ca.1899-1913 (a fifty nine sq. ft. series arranged numerically by file numbers). Each index card lists the subject, year of letter, the correspondence file reference number, and a brief summary of the topic of the letter." . . . . . "Indexes" . . . . . . . . "Card indexes" . "Pennsylvania Railroad. President." . . . .